Pretty simple. There's a vertical dial indicator on top, which doesn't rotate.
The rods fit into the bottom part that does rotate. If the ID or OD it's
touching isn't precisely centered, the rod wiggles back and forth, causing
another part to move up and down as the rod spins around.
Sort of like the reverse of collective pitch control in a helicopter.
When the needle on the indicator stops wiggling, the part is centered under the
spindle.
From: Gene Heskett <[email protected]>
To: [email protected]
Sent: Friday, October 7, 2016 8:47 AM
Subject: Re: [Emc-users] pressure equalizer method around ball nut
On Friday 07 October 2016 09:46:22 andy pugh wrote:
> You could consider using one of these instead of a probe:
> http://www.ebay.com/itm/CO-AX-INDICATOR-MILLING-MACHINE-COAXIAL-COAX-0
>005-/300841418164
I've not figured out how one of those works. The price seems decent
though.
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